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Combined sludge deep dehydration system and deep dehydration technique

A deep dehydration and combined technology, which is applied in water/sludge/sewage treatment, sludge treatment, dehydration/drying/concentrated sludge treatment, etc., can solve the problem of unclean filter cloth cleaning, high solid content of separation liquid, The problem of high moisture content in mud cake can achieve the effect of simple management, improved dehydration performance and large processing capacity.

Inactive Publication Date: 2016-04-06
SHANGHAI ATON ENVIRONMENTAL LIABILITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the current sludge dewatering process, in the process of treating excess activated sludge, the main problems are high moisture content of the dehydrated mud cake, low mud cake output, large amount of dosing, unclean filter cloth cleaning, high solid content of the separation liquid, Problems such as low solid recovery rate

Method used

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  • Combined sludge deep dehydration system and deep dehydration technique
  • Combined sludge deep dehydration system and deep dehydration technique
  • Combined sludge deep dehydration system and deep dehydration technique

Examples

Experimental program
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Effect test

Embodiment 1

[0061] The resource utilization project of sludge treatment and disposal in a certain city has a treatment scale of 200t / d (moisture content 78-82%), such as figure 1 and Figure 4 As shown, a combined sludge advanced dewatering system includes a sludge feeding unit, a sludge conditioning modification unit and a filter press dewatering unit. The sludge feeding unit includes a sludge dilution homogeneous tank and a sludge mixing tank. A conveying component, the sludge dilution and homogenization tank is connected to the sludge conditioning and modification unit through a sludge mixing and conveying component, and the sludge conditioning and modification unit is connected to the filter press dehydration unit. The inlet of the sludge dilution and homogenization tank is provided with a 45-60° slope 1, a grid 2 and a hydraulic tank cover 3, and the sludge dilution and homogenization tank is buried, and the height of the tank top above the ground is h It is 0.3-0.5m.

[0062] The ...

Embodiment 2

[0072] The sludge advanced treatment center project in a certain city has a treatment scale of 500t / d (200t / d (moisture content 78-82%)+300t / d (moisture content 98.8-99.2%)), such as figure 2 and Figure 4 As shown, a combined sludge advanced dewatering system includes a sludge feeding unit, a sludge conditioning modification unit and a filter press dewatering unit. The sludge feeding unit includes a sludge dilution homogeneous tank, a sludge mixing conveying component, sludge homogenizing tank, lift pump, mechanical thickener and dosing component, the sludge dilution homogenizing tank is connected with the sludge conditioning and modifying unit through the sludge mixing and conveying component, and the sludge is The mass pool is connected to the mechanical thickener through a lifting pump, the sludge homogenizer is also connected to the sludge dilution homogeneous pool, the mechanical thickener is connected to the sludge conditioning modification unit, and the The dosing co...

Embodiment 3

[0083] The sludge deep dehydration project in a certain city has a processing scale of 600t / d (300t / d (moisture content 78-82%)+300t / d (moisture content 98.8-99.2%)), such as image 3 with Figure 4 As shown, a combined sludge advanced dewatering system includes a sludge feeding unit, a sludge conditioning modification unit and a filter press dewatering unit. The sludge feeding unit includes a sludge dilution homogeneous tank, a sludge mixing conveying component, sludge homogenizing tank, lift pump, mechanical thickener and dosing component, the sludge dilution homogenizing tank is connected with the sludge conditioning and modifying unit through the sludge mixing and conveying component, and the sludge is The mass pool is connected to the mechanical thickener through a lifting pump, the sludge homogenizer is also connected to the sludge dilution homogeneous pool, the mechanical thickener is connected to the sludge conditioning modification unit, and the The dosing component ...

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Abstract

The invention provides a combined sludge deep dehydration system and deep dehydration technique. The dehydration system comprises a sludge feed unit, a sludge conditioning modification unit and a pressure filtration dehydration unit, wherein the sludge feed unit comprises a sludge dilution homogenization tank and a sludge mixing delivery assembly; the sludge dilution homogenization tank is connected with the sludge conditioning modification unit through the sludge mixing delivery assembly; and the sludge conditioning modification unit is connected with the pressure filtration dehydration unit. The deep dehydration technique comprises the following steps: (1) treating sludge by the sludge feed unit to obtain the sludge of which the water content is within a certain range; (2) sending the sludge obtained in the step (1) to the sludge conditioning modification unit, and adding a conditioner to perform conditioning; and (3) sending the sludge obtained in the step (2) to the pressure filtration dehydration unit to perform treatment. By optimizing the design, the whole technique has high adaptability, and can flexibly regulate the operation group number and time of the system according to the actual sludge feed quantity and water content condition, thereby ensuring the stable operation of the system.

Description

technical field [0001] The invention relates to the field of deep sludge dewatering, in particular to a combined sludge deep dewatering system and process. Background technique [0002] Sewage treatment plants mainly include primary sedimentation sludge, residual activated sludge and chemical sludge. The moisture content of the sludge is generally very high. The moisture content of the sludge in the primary sedimentation tank is between 95% and 97%, the residual activated sludge is above 99.2%, and the moisture content of the chemical sludge is above 99.5%. The remaining activated sludge produced by sewage treatment plants generally accounts for more than 80% of the total sludge output. Activated sludge is mainly composed of four parts: active microbial populations with metabolic functions; microbial endogenous respiration and self-oxidized residues; refractory organic matter adsorbed by sludge flocs; inorganic matter adsorbed by sludge flocs. Residual activated sludge mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12C02F11/14
CPCC02F11/121C02F11/14C02F2303/06
Inventor 桂新安李晖洪士杰杨瑒何国钢
Owner SHANGHAI ATON ENVIRONMENTAL LIABILITY
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