Bottom sludge coagulating reduction as well as preparation method and application thereof

A reducer and sediment technology, applied in dehydration/drying/concentrated sludge treatment, etc., can solve the problems of difficult transportation and disposal of sediment, low efficiency of mud-water separation, and difficulty in taking care of water bodies, etc., to enhance the self-purification ability of water bodies , The system has strong anti-disturbance and takes into account the effect of pollutant removal

Active Publication Date: 2017-11-24
芜湖格丰环保科技研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the transportation, treatment and disposal of sediment are difficult, and there is a risk of secondary pollution, which needs to be handled safely according to regulations
[0003] Different from the traditional dredging method, the in-situ reduction of sediment is an in-situ treatment method for the internal source pollution of black and odorous water. The current sediment coagulation reducer market is mixed, and most of the products have more organic components, which are expensive and muddy Low separation efficiency, poor volume reduction effect, poor anti-disturbance, difficult to balance COD and NH in water 3 -The removal of pollutants such as N, TP, and heavy metals failed to promote the restoration of the ecological function of the water body, and there were problems such as the risk of secondary pollution

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  • Bottom sludge coagulating reduction as well as preparation method and application thereof
  • Bottom sludge coagulating reduction as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A sediment coagulation reducer, comprising the following raw materials in parts by weight: 32 parts of 60-mesh polyaluminum chloride, whose effective matter content is ≥ 26%; 26 parts of 60-mesh polyferric sulfate, whose effective matter content is ≥ 20%; molecular weight ≥ 1 part of 12 million 60-mesh sodium polyacrylate; 20 parts of 200-mesh calcium-based bentonite, whose montmorillonite content is ≥ 85%; 13 parts of 200-mesh dolomite; 6 parts of 200-mesh bottom mud conditioner, the bottom mud conditioner It is a product of Gefeng Environmental Protection Technology Co., Ltd. -MSX01-P200; 2 parts of 60 mesh sodium ferrate. The preparation method is as follows: uniformly mix the above-mentioned raw materials with a dry powder mixer to obtain the sediment coagulation reducer.

[0029] According to the beaker experiment, the black and smelly water in the black and smelly river course was mixed with the bottom mud at a ratio of 1L:100g to obtain a mixed mud-water system...

Embodiment 2

[0032] A sediment coagulation reducer, comprising the following raw materials in parts by weight: 25 parts of 40-mesh polyaluminum chloride, whose effective content is ≥ 26%; 35 parts of 40-mesh polyferric sulfate, whose effective content is ≥ 20%; molecular weight ≥ 3 parts of 12 million 40-mesh sodium polyacrylate, 16 parts of 200-mesh calcium-based bentonite, its montmorillonite content ≥ 85%; 10 parts of 200-mesh dolomite; 8 parts of 200-mesh bottom mud conditioner, the bottom mud conditioner It is a product of Gefeng Environmental Protection Technology Co., Ltd. -MSX01-P200; 3 parts of 40 mesh sodium ferrate. The preparation method is as follows: uniformly mix the above-mentioned raw materials with a dry powder mixer to obtain the sediment coagulation reducer.

[0033] According to the beaker experiment, the black and smelly water in the black and smelly river course was mixed with the bottom mud at a ratio of 1L:100g to obtain a mixed mud-water system. The bottom mud w...

Embodiment 3

[0036] A sediment coagulation reducer, comprising the following raw materials in parts by weight: 34 parts of 80-mesh polyaluminum chloride, whose effective matter content is ≥ 26%; 26 parts of 80-mesh polyferric sulfate, whose effective matter content is ≥ 20%; molecular weight ≥ 5 parts of 12 million 80-mesh sodium polyacrylate, 22 parts of 200-mesh calcium-based bentonite, its montmorillonite content ≥ 85%; 6 parts of 200-mesh dolomite; 5 parts of 200-mesh bottom mud conditioner, the bottom mud conditioner It is a product of Gefeng Environmental Protection Technology Co., Ltd. -MSX01-P200; 2 parts of 80 mesh sodium ferrate. The preparation method is as follows: uniformly mixing the above-mentioned raw materials in the formula amount through a dry powder mixer to obtain the sediment coagulation reducer.

[0037] According to the beaker experiment, the black and smelly water in the black and smelly river course was mixed with the bottom mud at a ratio of 1L:100g to obtain a...

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Abstract

The invention discloses a bottom sludge coagulating reduction as well as a preparation method and application thereof. The bottom sludge coagulating reduction comprises the following ingredients in parts by weight: 25-35 parts of polyaluminium chloride, 25-35 parts of polyferric sulfate, 1-5 parts of sodium polyacrylate, 15-25 parts of calcium bentonite, 5-15 parts of dolomite, 5-10 parts of a bottom sludge conditioner and 1-5 parts of sodium ferrate. According to the coagulating reduction, in-situ, fast, efficient and stable coagulation, passivation and settling separation are performed on bottom sludge, suspended matters and the like in a governance process of urban black and odorous water bodies, so that the volume of dirty muddy water and pollutants such as COD (chemical oxygen demand), NH3-N, TP (total phosphorus), heavy metals and the like in the water bodies are quickly reduced, the transparency of the water bodies is purified, the self-purification capacity of the water bodies is enhanced, and the ecological restoration of the water bodies is promoted. Therefore, the purposes of landscape restoration and sludge and water co-governance are achieved; compared with the traditional black and odorous water body bottom sludge dredging technology, a technology adopting the bottom sludge coagulating reduction has outstanding advantages.

Description

technical field [0001] The invention belongs to the technical field of urban black and odorous water treatment, and in particular relates to a sediment coagulation reducer and its preparation method and application. Background technique [0002] Dredging is the most direct way to treat internal sources of black and odorous water. It is basically applicable to all black and odorous water bodies, especially the cleaning of sediment pollutants in severe black and odorous water bodies. It can quickly reduce the endogenous pollution load of black and odorous water bodies. Dredging includes mechanical dredging and hydraulic dredging, and the storage and purification measures of the original black and odorous water in urban water bodies should be considered in the project. Before dredging, it is necessary to do a good job of sediment pollution investigation, specify the scope and depth of dredging, if it is too deep, it will easily damage the aquatic ecology of the river bottom, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14
CPCC02F11/14
Inventor 朱慧可章文贵范丽梅施超远奉向东
Owner 芜湖格丰环保科技研究院有限公司
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