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A mobile sludge dewatering device with a modification reaction device and a dehydration method
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A sludge dehydration and reaction device technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems of high operation and maintenance costs, environmental pollution, complex structure, etc., and achieve low operation and maintenance costs, flexibility, The effect of high degree of automation
Active Publication Date: 2016-09-14
深圳市洪桦环保科技有限公司
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[0004] However, the concentration and dehydration of the above-mentioned sludge are relatively large-scale (several hundred tons of sludge mixed liquid) treatment processes and facilities. The sludge treatment system consists of many components, many connected pipes, and a complex structure. For small-scale sewage treatment plants with sludge production (80% moisture content) below 5 tons per day, the operation and maintenance costs are relatively high; In-situ treatment measures will cause serious environmental pollution and economic losses
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Embodiment 1
[0056] A dehydration method of a mobile sludge dewatering device with a modified reaction device, the specific steps are as follows:
[0057] S1: Move the sludge dehydration device to the side of the sludge concentration tank 6 to be treated by the carrier vehicle 1, and establish a connection with the sludge concentration tank 6;
[0058] S2: Sludge pretreatment, adjust the concentrated sludge to 93% water content;
[0059] S3: Sludge modification reaction, weigh 2500g of the sludge obtained in step S2, and add 20ml mass fraction 98%H 2 SO 4 , 40ml mass fraction 30%H 2 o 2 , 140ml concentration 1mol / L FeSO 4 , modified at 30°C, stirred for 5 minutes;
[0060] S4: Press filtration for dehydration, and the filter cake is dried until the dehydration rate is measured by weighing. The experimental results show that the moisture content of the filter cake is 53.46%.
Embodiment 2
[0062] A dehydration method of a mobile sludge dewatering device with a modified reaction device, the specific steps are as follows:
[0063] S1: Move the sludge dehydration device to the side of the sludge concentration tank 6 to be treated by the carrier vehicle 1, and establish a connection with the sludge concentration tank 6;
[0064] S2: Sludge pretreatment, adjust the concentrated sludge to 93% water content;
[0065] S3: Sludge modification reaction, weigh 2500g of the sludge obtained in step S2, and add 20ml mass fraction 98%H 2 SO 4 , 40ml mass fraction 30%H 2 o 2 , 14ml concentration 1mol / L FeSO 4 , modified at 30°C, stirred for 5 minutes;
[0066] S4: Press filtration for dehydration, and the filter cake is dried until the dehydration rate is measured by weighing. The experimental results show that the moisture content of the filter cake is 55.67%.
Embodiment 3
[0068] A dehydration method of a mobile sludge dewatering device with a modified reaction device, the specific steps are as follows:
[0069] S1: Move the sludge dehydration device to the side of the sludge concentration tank 6 to be treated by the carrier vehicle 1, and establish a connection with the sludge concentration tank 6;
[0070] S2: Sludge pretreatment, adjust the concentrated sludge to 92% water content;
[0071] S3: Sludge modification reaction, weigh 2000g of the sludge obtained in step S2, and add 20ml mass fraction 98%H 2 SO 4 , 30ml mass fraction 30%H 2 o 2 , 150ml concentration 1mol / L FeSO 4 , modified at 4°C, stirred for 5 minutes;
[0072] S4: Press filtration for dehydration, and the filter cake is dried until the dehydration rate is measured by weighing. The experimental results show that the moisture content of the filter cake is 57.55%.
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Abstract
The invention relates to a mobile sludge dewatering device with a modification reaction device and a dewatering method. The device comprises a carrier vehicle, as well as the modification reaction device, a pressure filtration device and a tail water reusing device which are arranged on the carrier vehicle, wherein the tail water reusing device is connected with the modification reaction device and the pressure filtration device, the modification reaction device is provided with a screw feed pump for inputting sludge and a modification reaction tank for modifying and outputting the sludge, and the outlet of the modification reaction tank is connected with the pressure filtration device. The method comprises the following steps: S1) moving to a to-be-treated point and establishing a connection with a sludge concentration pond; S2) regulating the water content in the sludge to 90%-92% by virtue of the to-be-treated sludge concentration pond, and further returning part of tail water to regulate the water content of the sludge to 92%-93%; S3) performing modification and conditioning reaction on the sludge with the water content by virtue of the modification reaction device to reduce the specific resistance of the sludge; S4) conveying the sludge after modification and conditioning reaction to the pressure filtration device, performing pressure filtration and dewatering, and outputting a sludge cake obtained by pressure filtration in a centralized manner.
Description
technical field [0001] The invention relates to the field of sludge dewatering, in particular to a mobile sludge dewatering device with a modification reaction device and a dewatering method. Background technique [0002] Sludge is a by-product formed when sewage treatment plants process domestic sewage, industrial wastewater, etc. It plays a pivotal role in the process of energy saving and emission reduction, ecological construction and sustainable economic development. Sludge is mainly composed of microbial cell groups and their disintegration products. It contains rich organic matter, a large amount of heavy metal ions and pathogenic bacteria and other toxic and harmful substances. Toxic and harmful substances in the air enter the environment such as water and air again, causing new pollution problems. In the process of sludge treatment and disposal, sludge dehydration becomes the key to reduction. The moisture content of the initial sludge is very high, ranging from 97...
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Application Information
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