Method for municipal sludge in-situ detwatering by utilization of Fenton sludge
A municipal sludge and in-situ dehydration technology, applied in water/sludge/sewage treatment, sludge detoxification, sludge treatment, etc., can solve the problems of sludge dehydration difficulty, achieve good stability and low treatment cost , to avoid the effect of odor and leakage
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Embodiment 1
[0034] The Fenton sludge is the chemical sludge produced by the advanced treatment of the Fenton oxidation method in the sewage treatment plant, and the concentration of heavy metals contained in it is lower than the requirements in GB4284-84. Fe in the dried mud was measured after the Fenton sludge that this embodiment adopted was dried. 2 o 3 The content is 52.7%.
[0035] Specific steps:
[0036] (1) After the sludge containing a large amount of iron elements produced by the Fenton oxidation advanced treatment of industrial wastewater is filtered by the sewage treatment plant, then after natural air drying or mechanical dehydration, sulfuric acid is added to activate it, so that the iron elements in it exist in the form of ions in sludge;
[0037] (2) Put plastic drainage boards into the municipal sludge field piled up in large quantities to carry out dehydration pretreatment of municipal sludge, and discharge the water generated in the following steps by conventional va...
Embodiment 2
[0050] Fe in the dried mud was measured after the Fenton sludge that this embodiment adopted was dried. 2 o 3 The content is 49.7%.
[0051] Specific steps:
[0052] (1) After the sludge containing a large amount of iron elements produced by the Fenton oxidation advanced treatment of industrial wastewater is filtered by the sewage treatment plant, then after natural air drying or mechanical dehydration, sulfuric acid is added to activate it, so that the iron elements in it exist in the form of ions in sludge;
[0053] (2) Put plastic drainage boards into the municipal sludge field piled up in large quantities to carry out dehydration pretreatment of municipal sludge, and discharge the water generated in the following steps by conventional vacuum preloading drainage method, so as to reduce the amount of municipal sludge in advance stabilization and stabilization;
[0054] (3) Add the Fenton sludge activated with sulfuric acid into the pretreated municipal sludge, and stir t...
Embodiment 3
[0066] Fe in the dried mud was measured after the Fenton sludge that this embodiment adopted was dried. 2 o 3 The content is 45.2%.
[0067] Specific steps:
[0068] (1) After the sludge containing a large amount of iron elements produced by the Fenton oxidation advanced treatment of industrial wastewater is filtered by the sewage treatment plant, then after natural air drying or mechanical dehydration, sulfuric acid is added to activate it, so that the iron elements in it exist in the form of ions in sludge;
[0069] (2) Put plastic drainage boards into the municipal sludge field piled up in large quantities to carry out dehydration pretreatment of municipal sludge, and discharge the water generated in the following steps by conventional vacuum preloading drainage method, so as to reduce the amount of municipal sludge in advance stabilization and stabilization;
[0070] (3) Add the Fenton sludge activated with sulfuric acid into the pretreated municipal sludge, and stir t...
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