CN104071962A - Treatment method of river or lake sediments - Google Patents

Treatment method of river or lake sediments Download PDF

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Publication number
CN104071962A
CN104071962A CN201310108436.8A CN201310108436A CN104071962A CN 104071962 A CN104071962 A CN 104071962A CN 201310108436 A CN201310108436 A CN 201310108436A CN 104071962 A CN104071962 A CN 104071962A
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mud
described step
treatment process
bed mud
lake
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CN201310108436.8A
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Inventor
李志光
姜良军
张继峰
李明松
刘海林
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HUNAN KINGHOOD ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Abstract

The invention provides a treatment method of river or lake sediments. The treatment method comprises the following steps: (a) removing gravel from the river or lake sediments; (b) mixing the gravel-free sediments obtained in the step (a) with an oxidant for conditioning the sediments to obtain a conditioned product; (c) mixing the conditioned product obtained in the step (b) with a flocculant for coagulation treatment; (d) performing pressure filtration on the sediments subjected to the coagulation treatment. According to the method, the pH values of sediment cakes obtained by treating the sediments with the method provided by the invention as well as residual water, tail water and the like generated in a treatment process are 7, the content of suspended substances (SS) in the water is relatively low, the content of ammonia nitrogen, total nitrogen and total phosphorus is reduced, the waste water and the tail water can be directly discharged back, the obtained sediment cakes can be directly utilized, environmental harm cannot be caused, and relatively high environmental protection values are achieved.

Description

The treatment process of a kind of river course or bottom mud in lake
Technical field
The present invention relates to technical field of sludge treatment, relate in particular to the treatment process of a kind of river course or bottom mud in lake.
Background technology
River course or bottom mud in lake be the mixture of clay, silt, organic matter and various mineral normally, through long-time physics, chemistry and the effect such as biological and water body, transports and is deposited on water bottom and forms.Quickening along with expanding economy and process of industrialization, without sanitary sewage and the trade effluent suitably processed, directly enter river course in a large number, make a large amount of pollutant sediments in river bottom mud, in order to prevent that the pollutent in river bottom mud is discharged into water body again, cause the secondary pollution of water body, dredge polluted river channel bed mud.
In the prior art, sediment dredging is the mode of storehouse, lake endogenous pollution of removing the most thoroughly up to now.Environmental dredging is intended to remove the polluted bed mud in the water body of Huo Hu storehouse, river course, and create conditions for the recovery of river course or lake aquatic ecosystem, the water ratio of environmental dredging mud is high, contain the various pollution substances such as plurality of heavy metal, nitrogen, phosphorus, organism, and bulky, be not easy to store, transport and be used.Half is in the majority with fine particle silty clay for the soil property composition of dredging mud, be difficult under field conditions (factors) dehydration and drying, weather as more in precipitation, after 5~10 years, dredge soil and all cannot reach requirement for bearing capacity, dredging stockyard cannot reuse, soil, stockyard is occupied for a long time, causes dredging engineering to take up an area pressure larger, has a strong impact on carrying out of extensive dredging engineering.Dredging bed mud can be carried out to fast dewatering mummification, become the key factor that restriction sediment dredging engineering is extensively carried out.
At present, in river course and bottom mud in lake dehydration technique, more is after adopting interpolation alkali electroless medicament to nurse one's health, then adopts flocculation agent to carry out the method for dewatering by press filtration after polymerization, and the moisture content of the cake obtaining is in 50% left and right.Yet, this technology contains alkaline chemical agent owing to having adopted, cause the pH value of filtrate in 12 left and right, can not directly discharge, need to add in a large amount of acid solutions and rear discharge, the mud cake after dehydration is similarly alkalescence simultaneously, to its follow-up resource utilization with innoxiously cause certain difficulty, therefore, there is larger ambient wind dangerous; And the chemical feeding quantity of the method is large, cause subsequent disposal amount large, increased processing cost.
Summary of the invention
The object of the present invention is to provide the treatment process of a kind of river course or bottom mud in lake, method provided by the invention has the higher value of environmental protection, makes the direct row of returning such as the remaining water after sludge handling, tail water, and has higher economic worth.
The treatment process that the invention provides a kind of river course or bottom mud in lake, comprises the following steps:
A) remove the sandstone in river course or bottom mud in lake;
B) bed mud of removing after sandstone described step a) being obtained mixes with oxygenant, and bed mud is nursed one's health to processing, obtains nursing one's health product;
C) the conditioning product described step b) being obtained mixes with flocculation agent, carries out coagulation processing;
D) bed mud that completes described coagulation processing is carried out to press filtration.
Preferably, the oxygenant described in described step b) is one or more in hydrogen peroxide, ozone, hydroxyl radical free radical or negative oxygen ion.
Preferably, in described step b), the mass ratio of oxygenant and described bed mud butt is (1~50) mg/kg.
Preferably, the conditioning in described step b) is treated to one or both in aeration and mechanical stirring.
Preferably, the time that in described step b), conditioning is processed is 2min~15min.
Preferably, the flocculation agent in described step c) is one or more in iron-based flocculating agent, aluminium based flocculating agent, the compound based flocculating agent of iron aluminium and polyacrylamide.
Preferably, the flocculation agent in described step c) is one or more in ferrous sulfate, iron(ic) chloride, bodied ferric sulfate, aluminum chloride, Tai-Ace S 150, polymerize aluminum chloride, alum and polyacrylamide.
Preferably, the mass fraction that in described step c), flocculation agent accounts for described bed mud butt is 0.01%~0.5%.
Preferably, described step a) is specially:
Pending river course or bottom mud in lake are carried out to sedimentation processing, remove the sandstone in described bed mud, described sedimentation is gravity settling or rotational flow settlement.
Preferably, in described step d), the pressure of press filtration is 0.1MPa~1.0MPa.
The treatment process that the invention provides a kind of river course or bottom mud in lake, comprises the following steps: a) remove the sandstone in river course or bottom mud in lake; B) bed mud of removing after sandstone described step a) being obtained mixes with oxygenant, and bed mud is nursed one's health to processing, obtains nursing one's health product; C) the conditioning product described step b) being obtained mixes with flocculation agent, carries out coagulation processing; D) bed mud that completes described coagulation processing is carried out to press filtration.First method provided by the invention removes the macrobead sandstone in river course or bottom mud in lake, and then the material obtaining is mixed with oxygenant, nurses one's health processing; Again the conditioning product obtaining is carried out to coagulation processing, finally the coagulation product obtaining is carried out to press filtration, obtain mud cake, complete the processing to bed mud.Method provided by the invention adopts oxygenant to nurse one's health processing to bed mud, and then the easier coagulation of mud of process oxidizer treatment in coagulation treating processes, is more conducive to the dehydration in later stage, greatly reduces the water ratio of the mud cake obtaining.Method provided by the invention is processed the mud cake obtaining, and the pH value such as the remaining water producing in treating processes, tail water approaches neutral, and (SS) is lower for suspended substance in water quality, wherein the content of ammonia nitrogen, total nitrogen, total phosphorus has also obtained subduing, remaining water wherein, tail water is the row of returning directly, the mud cake obtaining can directly utilize, and can not work the mischief to environment, has the higher value of environmental protection.
Embodiment
A treatment process for river course or bottom mud in lake, comprises the following steps:
A) remove the sandstone in river course or bottom mud in lake;
B) bed mud of removing after sandstone described step a) being obtained mixes with oxygenant, and bed mud is nursed one's health to processing, obtains nursing one's health product;
C) the conditioning product described step b) being obtained mixes with flocculation agent, carries out coagulation processing;
D) bed mud that completes described coagulation processing is carried out to press filtration.
Method provided by the invention is nursed one's health bed mud and oxygenant after processing, the conditioning product obtaining is carried out to coagulation processing, then the coagulation product obtaining is carried out to press filtration, obtains mud cake, has completed the processing of bed mud.Method provided by the invention does not adopt alkali electroless medicament to nurse one's health processing to bed mud, thereby make the remaining water producing in treating processes, the pH value of tail water approach neutral, SS is below 20mg/L, and the indexs such as ammonia nitrogen wherein, total nitrogen, total phosphorus are all subdued to some extent with respect to raw water quality, the remaining water that makes to produce in treating processes, tail water are without carrying out the directly row of going back to of subsequent disposal; And the mud cake that processing obtains also can directly fully utilize.Therefore, method provided by the invention, has realized the minimizing of bed mud, innoxious and resource utilization, does not have environmental risk.
First the present invention removes the sandstone in river course or bottom mud in lake, and the present invention preferably carries out sedimentation processing by pending river course or bottom mud in lake, removes wherein oarse-grained sandstone, and in the present invention, described sedimentation is preferably gravity settling or rotational flow settlement.The present invention does not have special restriction to the method for described gravity settling or rotational flow settlement, adopts the technical scheme of gravity settling well known to those skilled in the art or rotational flow settlement.
Be removed after the bed mud of sandstone, the present invention mixes the described bed mud of removing sandstone with oxygenant, bed mud is nursed one's health to processing, obtains nursing one's health product.The present invention preferably adds oxygenant in the described bed mud of removing sandstone, adopts hybrid mode to nurse one's health processing, obtains nursing one's health product.In the present invention, described hybrid mode is preferably one or both in aeration or mechanical stirring.The present invention does not have special restriction to described aeration or churned mechanically method, adopts aeration well known to those skilled in the art or churned mechanically technical scheme.In the present invention, the time that described conditioning is processed is preferably 2min~15min, more preferably 5min~10min;
In the present invention, described oxygenant is preferably one or more in hydrogen peroxide, ozone, hydroxyl radical free radical or negative oxygen ion, more preferably one or both in ozone or negative oxygen ion.The present invention does not have special restriction to the source of described hydroxyl radical free radical or negative oxygen ion, adopts the material that can produce hydroxyl radical free radical or negative oxygen ion well known to those skilled in the art to be prepared hydroxyl radical free radical or negative oxygen ion.In the present invention, the mass fraction that the add-on of described oxygenant accounts for described bed mud butt is preferably (1~50) mg/kg, and more preferably (5~45) mg/kg, most preferably is (10~40) mg/kg.Method provided by the invention adds the amount of oxygenant less, makes processing costs low, and the weightening finish of mud is little, thereby makes to reduce with quantity, has higher economic worth.
Complete after described conditioning processing, the present invention mixes the conditioning product obtaining with flocculation agent, carry out coagulation processing.The present invention preferably adds flocculation agent in described conditioning product, carries out coagulation processing after mixing.In the present invention, described flocculation agent is preferably one or more in iron-based flocculating agent, aluminium based flocculating agent, the compound based flocculating agent of iron aluminium and polyacrylamide, more preferably one or more in ferrous sulfate, iron(ic) chloride, bodied ferric sulfate, aluminum chloride, Tai-Ace S 150, polymerize aluminum chloride, alum and polyacrylamide, more preferably iron(ic) chloride, polymerize aluminum chloride and polyacrylamide.In the present invention, the mass ratio of described flocculation agent and described bed mud butt is preferably 0.01%~0.5%, and more preferably 0.02%~0.04%.
Complete after described coagulation processing, the present invention carries out press filtration by the bed mud of processing through coagulation obtaining, and obtains mud cake, completes the processing to bed mud.The present invention does not have special restriction to the method for described press filtration, adopts the technical scheme of press filtration well known to those skilled in the art.The present invention is preferably delivered to pressure filter by the bed mud of processing through coagulation by sludge pump and carries out press filtration.In the present invention, the pressure of described pressure is preferably 0.1MPa~1.0MPa, more preferably 0.5MPa~0.7MPa.
The present invention carries out water ratio detection to the mud cake obtaining, result shows, the water ratio in the mud cake that method provided by the invention obtains is less than 30%, and its pH value approaches neutral, can directly utilize, thereby realize the minimizing of bed mud, innoxious and resource utilization.
The present invention has detected the pH value, SS value of the remaining water that produces in treating processes, tail water and the content of ammonia nitrogen, total nitrogen, total phosphorus wherein, result shows, the remaining water that method provided by the invention produces, the pH value of tail water approach neutral, SS is less than 20mg/L, and wherein the content of ammonia nitrogen, total nitrogen, total phosphorus has obtained subduing with respect to raw water quality, thereby make the remaining water, the tail water that in dehydration, produce can not carry out the directly row of going back to of any processing, can not produce harm to environment, there is the higher value of environmental protection.
The treatment process that the invention provides a kind of river course or bottom mud in lake, comprises the following steps: a) remove the sandstone in river course or bottom mud in lake; B) bed mud of removing after sandstone described step a) being obtained mixes with oxygenant, and bed mud is nursed one's health to processing, obtains nursing one's health product; C) the conditioning product described step b) being obtained mixes with flocculation agent, carries out coagulation processing; D) bed mud that completes described coagulation processing is carried out to press filtration, obtain mud cake, complete the processing to described bed mud.First method provided by the invention removes the macrobead sandstone in river course or bottom mud in lake, and then the material obtaining is mixed with oxygenant, nurses one's health processing; Again the conditioning product obtaining is carried out to coagulation processing, finally the coagulation product obtaining is carried out to press filtration, obtain mud cake, complete the processing to bed mud.Method provided by the invention adopts oxygenant to nurse one's health processing to bed mud, and then the easier coagulation of mud of process oxidizer treatment in coagulation treating processes, is more conducive to the dehydration in later stage, greatly reduces the water ratio of the mud cake obtaining.Method provided by the invention is processed the mud cake obtaining, and the pH value such as the remaining water producing in treating processes, tail water approaches neutral, and (SS) is lower for suspended substance in water quality, wherein the content of ammonia nitrogen, total nitrogen, total phosphorus has also obtained subduing, remaining water wherein, tail water is the row of returning directly, the mud cake obtaining can directly utilize, and can not work the mischief to environment, has the higher value of environmental protection.
In order to further illustrate the present invention, below in conjunction with embodiment, the treatment process of river course provided by the invention or bottom mud in lake is described in detail, but they can not be interpreted as to limiting the scope of the present invention.
In the following embodiments, the dosage of medicament calculates with the oven-dry weight of mud.
Embodiment 1
Pending river bottom mud is provided, record its mixed solution sludge concentration (MLSS) for 88160mg/L, adopt the mode of gravity settling to remove the coarse particulate matter in river bottom mud, then the river bottom mud obtaining is carried out under churned mechanically condition to ozonation aerated conditioning processing, the mass content of the ozone adding is 15mg/kg DS, and the conditioning treatment time is 2min; And then add wherein 0.025% polyacrylamide to carry out polymerization precipitation, and the mixture obtaining being sent by pumping to pressure filter and carrying out press filtration, press filtration feed pressure is 0.8MPa, obtains the mud cake that water ratio is less than 50%.
The water ratio that the present invention's detection obtains mud cake is 27.90%, and the mud cake that method provided by the invention obtains can directly fully utilize, and has realized the minimizing of bed mud, innoxious and resource utilization;
Remaining water, tail water that the present invention carries out producing in above-mentioned treating processes to bed mud detect, result shows, the pH value of Yu Shui, tail water is in 7 left and right, SS is below 10mg/L, and the relative raw water quality of the content of ammonia nitrogen wherein, total nitrogen, total phosphorus all has minimizing, therefore, the remaining water producing in dehydration, tail water can not processed the directly row of going back to, and can not work the mischief to environment.
Embodiment 2
Pending river bottom mud is provided, and measuring its MLSS is 90010mg/L, adopts the method for eddy flow to carry out sedimentation processing, isolates the wherein larger sandstone of particle;
Under churned mechanically condition, to removing in the bed mud of sandstone, add ozone to nurse one's health processing, the mass content that adds ozone is 50mg/kg DS, the conditioning treatment time is 5min, obtains conditioning and processes product;
The conditioning obtaining is processed to product and mix with iron-based flocculating agent, carry out coagulation processing, the massfraction that adds iron-based flocculating agent is 0.04%; Then by sludge pump, the mixture obtaining is delivered to pressure filter and carry out press filtration, press filtration feed pressure is 0.8MPa, obtains the mud cake that water ratio is less than 50%.
The water ratio that the present invention's detection obtains mud cake is 28.5%, and the mud cake that method provided by the invention obtains can directly fully utilize, and has realized the minimizing of bed mud, innoxious and resource utilization;
Remaining water, tail water that the present invention carries out producing in above-mentioned treating processes to bed mud detect, result shows, the pH value of Yu Shui, tail water is in 7 left and right, SS is below 10mg/L, and the relative raw water quality of the content of ammonia nitrogen wherein, total nitrogen, total phosphorus all has minimizing, therefore, the remaining water producing in dehydration, tail water can not processed the directly row of going back to, and can not work the mischief to environment.
Embodiment 3
Pending bottom mud in lake is provided, and measuring its MLSS is 83056mg/L, adopts the mode of gravity settling to carry out sedimentation processing to it, isolates the wherein larger sandstone of particle;
Under churned mechanically condition, to removing in the bed mud of sandstone, add hydrogen peroxide to nurse one's health processing, the mass content that adds hydrogen peroxide is 5mg/kg DS, the conditioning treatment time is 15min, obtains conditioning and processes product;
The conditioning obtaining is processed to product and mix with aluminium based flocculating agent, carry out coagulation processing, the massfraction that adds aluminium based flocculating agent is 0.035%; Then by sludge pump, the mixture obtaining is delivered to pressure filter and carry out press filtration, press filtration feed pressure is 0.8MPa, obtains the mud cake that water ratio is less than 50%.
The water ratio that the present invention's detection obtains mud cake is 27.95%, and the mud cake that method provided by the invention obtains can directly fully utilize, and has realized the minimizing of bed mud, innoxious and resource utilization;
Remaining water, tail water that the present invention carries out producing in above-mentioned treating processes to bed mud detect, result shows, the pH value of Yu Shui, tail water is in 7 left and right, SS is below 10mg/L, and the relative raw water quality of the content of ammonia nitrogen wherein, total nitrogen, total phosphorus all has minimizing, therefore, the remaining water producing in dehydration, tail water can not processed the directly row of going back to, and can not work the mischief to environment.
As seen from the above embodiment, the invention provides the treatment process of a kind of river course or bottom mud in lake, comprise the following steps: a) remove the sandstone in river course or bottom mud in lake; B) bed mud of removing after sandstone described step a) being obtained mixes with oxygenant, and bed mud is nursed one's health to processing, obtains nursing one's health product; C) the conditioning product described step b) being obtained mixes with flocculation agent, carries out coagulation processing; D) bed mud that completes described coagulation processing is carried out to press filtration, obtain mud cake, complete the processing to described bed mud.First method provided by the invention removes the macrobead sandstone in river course or bottom mud in lake, and then the material obtaining is mixed with oxygenant, nurses one's health processing; Again the conditioning product obtaining is carried out to coagulation processing, finally the coagulation product obtaining is carried out to press filtration, obtain mud cake, complete the processing to bed mud.Method provided by the invention adopts oxygenant to nurse one's health processing to bed mud, and then the easier coagulation of mud of process oxidizer treatment in coagulation treating processes, is more conducive to the dehydration in later stage, greatly reduces the water ratio of the mud cake obtaining.Method provided by the invention is processed the mud cake obtaining, and the pH value such as the remaining water producing in treating processes, tail water approaches neutral, and (SS) is lower for suspended substance in water quality, wherein the content of ammonia nitrogen, total nitrogen, total phosphorus has also obtained subduing, remaining water wherein, tail water is the row of returning directly, the mud cake obtaining can directly utilize, and can not work the mischief to environment, has the higher value of environmental protection.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. a treatment process for river course or bottom mud in lake, comprises the following steps:
A) remove the sandstone in river course or bottom mud in lake;
B) bed mud of removing after sandstone described step a) being obtained mixes with oxygenant, and bed mud is nursed one's health, and obtains nursing one's health product;
C) the conditioning product described step b) being obtained mixes with flocculation agent, carries out coagulation processing;
D) bed mud that completes described coagulation processing is carried out to press filtration.
2. treatment process according to claim 1, is characterized in that, the oxygenant described in described step b) is one or more in hydrogen peroxide, ozone, hydroxyl radical free radical or negative oxygen ion.
3. according to the treatment process described in claim 1~2 any one, it is characterized in that, in described step b), the mass ratio of oxygenant and described bed mud butt is (1~50) mg/kg.
4. according to the treatment process described in claim 1~2 any one, it is characterized in that, the conditioning in described step b) is treated to one or both in aeration and mechanical stirring.
5. according to the treatment process described in claim 1~2 any one, it is characterized in that, the time that in described step b), conditioning is processed is 2min~15min.
6. treatment process according to claim 1, is characterized in that, the flocculation agent in described step c) is one or more in iron-based flocculating agent, aluminium based flocculating agent, the compound based flocculating agent of iron aluminium and polyacrylamide.
7. treatment process according to claim 6, is characterized in that, the flocculation agent in described step c) is one or more in ferrous sulfate, iron(ic) chloride, bodied ferric sulfate, aluminum chloride, Tai-Ace S 150, polymerize aluminum chloride, alum and polyacrylamide.
8. according to the treatment process described in claim 1,6~7 any one, it is characterized in that, in described step c), to account for the mass fraction of described bed mud butt be 0.01%~0.5% to flocculation agent.
9. treatment process according to claim 1, is characterized in that, described step a) is specially:
Pending river course or bottom mud in lake are carried out to sedimentation processing, remove the sandstone in described bed mud, described sedimentation is gravity settling or rotational flow settlement.
10. treatment process according to claim 1, is characterized in that, in described step d), the pressure of press filtration is 0.1MPa~1.0MPa.
CN201310108436.8A 2013-03-29 2013-03-29 Treatment method of river or lake sediments Pending CN104071962A (en)

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Cited By (12)

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CN104609692A (en) * 2014-12-29 2015-05-13 东莞市东元新能源科技有限公司 Sludge tempering pre-treatment method
CN104973750A (en) * 2015-06-29 2015-10-14 北京工业大学 Combined conditioning method for sludge high-efficient dehydration
CN105198108A (en) * 2015-09-30 2015-12-30 卞正奎 System for treating waste mud water and improving same into ecological water system
CN106746407A (en) * 2016-12-28 2017-05-31 山东益源环保科技有限公司 A kind of technique for improving excess sludge dewatering
CN108328905A (en) * 2018-03-21 2018-07-27 深圳市鸿卓环保科技有限公司 A kind of sludge dehydration conditioner and its application method
CN108516658A (en) * 2018-05-14 2018-09-11 清华大学 A kind of cleaning in place, equipment for reclaiming and the method for black-odor riverway bed mud
CN108840543A (en) * 2018-07-03 2018-11-20 北京联众华禹环保科技有限公司 A kind of oxidization processing system and treatment process of discarded slurry
CN109020155A (en) * 2018-08-10 2018-12-18 北京海斯顿水处理设备有限公司 A kind of sludge oxidized form conditioner and sludge conditioning method
CN110590118A (en) * 2019-09-02 2019-12-20 深圳市深创环境工程技术有限公司 Deep dehydration method for chemical conditioning of sludge garbage and dehydration system
CN110723846A (en) * 2019-09-02 2020-01-24 深圳市深创环境工程技术有限公司 Kitchen waste chemical conditioning deep dehydration method and dehydration system
CN110723845A (en) * 2019-09-02 2020-01-24 深圳市深创环境工程技术有限公司 Dehydration process for chemical conditioning depth of fruit and vegetable garbage and dehydration process system
CN112441716A (en) * 2019-08-30 2021-03-05 中建水务环保有限公司 Comprehensive treatment system and comprehensive treatment method for riverway dredging sediment

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CN104609692A (en) * 2014-12-29 2015-05-13 东莞市东元新能源科技有限公司 Sludge tempering pre-treatment method
CN104973750A (en) * 2015-06-29 2015-10-14 北京工业大学 Combined conditioning method for sludge high-efficient dehydration
CN105198108B (en) * 2015-09-30 2017-05-31 卞正奎 It is a kind of to administer sludge slurry water improvement into the system of ecological water system
CN105198108A (en) * 2015-09-30 2015-12-30 卞正奎 System for treating waste mud water and improving same into ecological water system
CN106746407B (en) * 2016-12-28 2020-08-21 山东益源环保科技有限公司 Process for improving dehydration performance of excess sludge
CN106746407A (en) * 2016-12-28 2017-05-31 山东益源环保科技有限公司 A kind of technique for improving excess sludge dewatering
CN108328905A (en) * 2018-03-21 2018-07-27 深圳市鸿卓环保科技有限公司 A kind of sludge dehydration conditioner and its application method
CN108516658A (en) * 2018-05-14 2018-09-11 清华大学 A kind of cleaning in place, equipment for reclaiming and the method for black-odor riverway bed mud
CN108516658B (en) * 2018-05-14 2021-03-16 清华大学 In-situ cleaning and recycling equipment and method for black and odorous river sediment
CN108840543A (en) * 2018-07-03 2018-11-20 北京联众华禹环保科技有限公司 A kind of oxidization processing system and treatment process of discarded slurry
CN108840543B (en) * 2018-07-03 2021-07-02 北京联众华禹环保科技有限公司 Oxidation treatment system and treatment process for waste slurry
CN109020155A (en) * 2018-08-10 2018-12-18 北京海斯顿水处理设备有限公司 A kind of sludge oxidized form conditioner and sludge conditioning method
CN112441716A (en) * 2019-08-30 2021-03-05 中建水务环保有限公司 Comprehensive treatment system and comprehensive treatment method for riverway dredging sediment
CN110590118A (en) * 2019-09-02 2019-12-20 深圳市深创环境工程技术有限公司 Deep dehydration method for chemical conditioning of sludge garbage and dehydration system
CN110723846A (en) * 2019-09-02 2020-01-24 深圳市深创环境工程技术有限公司 Kitchen waste chemical conditioning deep dehydration method and dehydration system
CN110723845A (en) * 2019-09-02 2020-01-24 深圳市深创环境工程技术有限公司 Dehydration process for chemical conditioning depth of fruit and vegetable garbage and dehydration process system

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