CN104556618A

CN104556618A - FFDS sludge treatment technology

Info

Publication number: CN104556618A
Application number: CN201310474422.8A
Authority: CN
Inventors: 肖泽华; 罗超
Original assignee: 肖泽华; 罗超
Current assignee: Yibin Luchuang Technology Co., Ltd.
Priority date: 2013-10-12
Filing date: 2013-10-12
Publication date: 2015-04-29
Anticipated expiration: 2033-10-12
Also published as: CN104556618B

Abstract

The invention relates to an FFDS sludge treatment technology for sludge treatment, comprising the following specific process: sending sludge with high water content into a sludge thickener to carry out thickening treatment, filtering through a filter material layer, carrying out biochemical fermentation (aerobic fermentation or anaerobic fermentation) by adding a strain into a filtered mixture of a filter material and sludge, deodorizing a gas generated by fermentation through a deodorization device, collecting and utilizing methane generated by anaerobic fermentation, drying a mixture obtained after fermentation by a drying technology mainly by air drying (cold air or hot air), and finally screening the filter material and dried sludge. The filter material is recycled, and the dried sludge is used as a raw material of an organic fertilizer for resource utilization. The invention has beneficial effects as follows: the sludge treatment effect is good, and treatment cost is low; peculiar smell emitted during the treatment process is small; effective utilization of sludge can be realized; secondary pollution to the environment will not be caused; and reduction and resource utilization of sludge treatment are realized.

Description

FFDS sludge disposal technique

Technical field

The present invention relates to a kind of disposing technique of mud, belong to environment-friendly treating process.

Especially effectively mud can be carried out processing and utilizing, the FFDS sludge disposal technique that the peculiar smell of process is few and innoxious.

Background technology

Mud refers to a kind of extremely complicated heterogeneous body be made up of organic relic, microorganism, inorganic particle, colloid etc. produced in sewage treatment process.Its main characteristic is that water ratio high (can up to more than 99%) organic content is high, easily smelly, and particle is comparatively thin, and proportion is less, jelly liquid.It is the concentrated thing between liquid and solid, can transport with pump, but is difficult to carry out solid-liquid separation by sedimentation.

The many employings of existing sludge disposal technique dosing after sludge thickener initial concentration is flocculated, and through press filtration removing large quantity of moisture, then filter cake is carried out landfill, burning disposal or landfill or burning disposal again after carrying out fermentation decrement.There is following shortcoming in above treatment process: 1, landfill method process needs to take valuable land resources, pollutes surrounding environment and underground water source, produces secondary pollution; 2, burning disposal cost of investment is large, and processing cost is high, also pollutes the environment after burning; 3, decrement fermentation is final still can remaining mud, need carry out secondary treatment.

Summary of the invention

The object of the invention is to aim to provide that a kind for the treatment of process is effective, processing cost is low, emit bad smell very little, can rational and efficient use mud, the FFDS sludge disposal technique of non-secondary pollution (is filtered, Filter; Fermentation, Fermentation; Mummification, Dry; Screening, Screening), to overcome the deficiency of prior art, realize effective disposing sludge simultaneously, avoid contaminate environment.

The technical solution used in the present invention is: FFDS sludge disposal technique, comprises the following steps:

1, sludge condensation filter: after sewage disposal remaining water ratio be more than 99% mud by sludge pump send into sludge thickener concentrate, after concentrated, water content is generally 96%, supernatant liquor is back in Sewage treatment systems, when mud is after concentration basin concentrating and separating goes out supernatant liquor, the bed of material filters after filtration, filtrate is back to Sewage treatment systems, and mud and filtrate enter next link;

2, sludge fermentation deodorizing: add bacterial classification in the mixture that the filtrate obtained after filtration and mud are formed, carry out aerobic fermentation or anaerobically fermenting, and establish odor removal to carry out deodorizing in zymotechnique part, when adopting anaerobically fermenting, the biogas of generation can carry out Collection utilization;

3, mud filtrate mummification: the rear mixture to obtaining after fermentation that fermented adopts drying process to carry out drying and other treatment, be mainly air-dry---cold wind or hot blast, the biogas combustion heat production that hot blast thermal source can utilize fermentation heat production or use anaerobically fermenting to produce, after drying and other treatment, moisture percentage in sewage sludge is down to less than 60%;

4, screening utilizes: after drying and other treatment, sieved by gains, then recycles, using gained dewatered sludge as organic fertilizer raw material being separated the filtrate drawn.

The filtrate that described FFDS sludge disposal technique adopts is the mixture of a kind of material in chaff shell, vinasse, gravel, pecan shell, gac, quartz sand, ceramic particle, plastic particle material or different materials arbitrarily.

The invention has the beneficial effects as follows: good to the treatment effect of mud, processing cost is low; The peculiar smell distributed in treating processes is very little; Effective utilization of mud can be realized; Secondary pollution can not be caused to environment; Achieve the minimizing of sludge treatment, recycling.

Accompanying drawing explanation

Fig. 1 is anaerobic ferment process schematic flow sheet of the present invention.

Fig. 2 is aerobic fermentation process schematic flow sheet of the present invention.

Embodiment

The present invention is further illustrated by following examples:

Shown in Fig. 1, Fig. 2, FFDS sludge disposal technique adopts following steps successively:

1, sludge condensation filter: after sewage disposal remaining water ratio be more than 99% mud by sludge pump send into sludge thickener concentrate, after concentrated, water content is generally 96%, supernatant liquor is back in Sewage treatment systems, when mud is after concentration basin concentrating and separating supernatant liquor, the bed of material filters after filtration, and the filtrate that filter material layer adopts is the mixture of a kind of material in chaff shell, vinasse, gravel, pecan shell, gac, quartz sand, ceramic particle, plastic particle material or different materials arbitrarily;

2, sludge fermentation deodorizing: add bacterial classification in the mixture that the filtrate obtained after filtration and mud are formed, carry out aerobic fermentation or anaerobically fermenting, after aerobic fermentation, temperature rising generally can reach 50 to 70 degrees Celsius, fermentation can produce foul smell, therefore establish odor removal in zymotechnique part, make foul smell through odor removal deodorizing, adopt during anaerobically fermenting and can produce biogas, collecting methane is utilized;

3, mud filtrate mummification: the rear mixture to obtaining after fermentation that fermented adopts drying process to carry out drying and other treatment, main employing is air-dry---cold wind or hot blast, the biogas combustion heat production that hot blast thermal source can be made good use of aerobe fermentation heat production or use anaerobically fermenting to produce, after drying and other treatment, moisture percentage in sewage sludge can be down to less than 60%;

4, screening utilizes: after drying and other treatment, sieved by gained mummification thing, then carries out reuse being separated the filtrate drawn, using gained dewatered sludge as organic fertilizer raw material, and then is turned waste into wealth by mud.

Claims

1.FFDS sludge disposal technique, is characterized in that: specifically comprise step as follows:

1), sludge condensation filter: after sewage disposal remaining water ratio be more than 99% mud by sludge pump send into sludge thickener concentrate, after concentrated, water content is generally 96%, supernatant liquor is back in Sewage treatment systems, when mud is after concentration basin concentrating and separating goes out supernatant liquor, the bed of material filters after filtration, filtrate is back to Sewage treatment systems, and mud and filtrate enter next link;

2), sludge fermentation deodorizing: add bacterial classification in the mixture that the filtrate obtained after filtration and mud are formed, carry out aerobic fermentation or anaerobically fermenting, and establish odor removal to carry out deodorizing in zymotechnique part, when adopting anaerobically fermenting, the biogas of generation can carry out Collection utilization;

3), mud filtrate mummification: the rear mixture to obtaining after fermentation that fermented adopts drying process to carry out drying and other treatment, be mainly air-dry---cold wind or hot blast, the biogas combustion heat production that hot blast thermal source can utilize fermentation heat production or use anaerobically fermenting to produce, after drying and other treatment, moisture percentage in sewage sludge can be down to less than 60%;

4), screening utilizes: after drying and other treatment, sieved by gains, then recycle, using gained dewatered sludge as organic fertilizer raw material being separated the filtrate drawn.

2. FFDS sludge disposal technique according to claim 1, is characterized in that: the filtrate adopted is the mixture of a kind of material in chaff shell, vinasse, gravel, pecan shell, gac, quartz sand, ceramic particle, plastic particle material or different materials arbitrarily.