How the of Water Flow Meter

Water flowmeter that is used in PDAM water service company in Indonesia use special kind of flow meter that is name Positive Displacement Flowmeter. Positive displacement flow meter work only when water enter into flowmeter. Entering water to the flowmeter can be from head or from tail is the same calculating. The record number of entering water to the flow meter always positive, this is mean that number changing on the flow meter always positive never deducted. 

For the detail work of this flow meter can be seen on my videos: or you can click this link: PDAM water flowmeter working.

Sludge Waste Treatment

Sludge waste as hazardous waste should be treated become not hazardous waste have many ways, the valid process usually by burning the suldge in the incenerator or as material for boiler in power plant. Other way to mix the waste with other material non hazardous waste in order the content of hazardous waste content become not significant anymore and can be avoided as hazardous waste. If the content of hazardous substance too high only by burning the waste in the incenerator or boiler burner the waste can be destroy become other substance and usually become gas.

Sludge waste from belt press usually still content high water (about 50%), this condition make sludge waste can't burnt dirrectly in burner of boiler or in incenerator. This waste should be treated first in dryer first become more dry and can be peletized that can be used as fuel in several industry like in ceramic industry or in metal tanur.

The rest of waste after burning usually still content hazardous material and called as fly ash. This as can used in cement industry mixed with other clincer become cement material. So sludge waste will missing become cement material and become building. The process for other waste may be more complex and need preliminary process in order can destroy the hazardous conten or react with other substance using other waste become non hazardous waste.

The complexity of  hazardous waste process can becouse of huge amount or because of hazardous content difficult to be destroyed. Sometime use electrolyse method to take heavy metal content on the waste in order the waste become non hazardous waste.

Citarum River Problem

The problem on Citarum River may be have spread over the world because this river have been talk by many NGO even the international NGO like Greenpeace have inspect dirrectly to this river and see the condition and found many deviate condition on this river.

The problem is not just because this river become shallow but also contaminated the river by industrial waste and also municipal waste that have been a general condition in the world that never treat of municipal waste. While in the downstream of this river is treated become drinking water like in Jakarta.

Some industry that located in upstream of the river don't follow the regulation to treat their waste water before discharge into the river. Even many industry already treated waste water and discharge into the river as the regulation mentioned but the quality of the river will problem if use as drinking water because discharge water regulated by government is not fullfill for drinking water source.

Citarum river silting have been handled by Government by release budget to dredge the river. Dredging funded budget of Rp 1.3 trillion, which will be used during the three fiscal years through 2013. Early stage targets Citarum River dredging will be done along Sapan, Bandung regency, until Combong waterfall, Nanjung, West Bandung regency whose length is 45 kilometers.

Complete Waste Water Treatment

To process waste water treatment into perfect water treatment very difficult especially if the waste water contain of chemicals that really difficult to process, such as contain of gas dissolved in the water. Bacteria can’t process dissolved gas in water, bacteria just process organic matter that include in waste water. Like on the picture below is the example of perfect waste water treatment from inductrial waste.

Complete waste water treatment include separating solids, removing pollutant, improving product water quality, and promoting water savings and reuse. Coagulant have function to neutralize the electrical charges on suspended colloidal particles, allowing them to join together. Flocculant agent facilitate the agglomeration of the coagulated particles to form larger flocs, which settle much more quickly. Some coagulant substance can functions as a dual purpose either coagulant and floculant in that, they create large flocs that readly settle.