How should I correct the drains for the dual sink and washing machine

kitchensplumbingsink

The waste pipe under the sink is about 5cm below the bowl of the sink. I need to reconfigure what the plumber has installed as there are smells coming up. I know it's a high waste pipe and best to lower it but if possible I'd like to reconfigure what exists. Any suggestions welcome.

The white corrugated pipe far left is main bowl overflow

The metal hoses are hot and cold water into the tap.

The grey pipe with red tape is washing machine.

Black is waste pipe.

Left side is the main bowl, right side is drain basket (connector sealed).

current configuration

Best Answer

Here is what you should do temporarily until you properly open the wall and lower the drain pipe.

  1. The trap is in the wrong place. There is an open air path from the drain pipe to the drain basket and laundry. Hence the smell. The larger sink should use a 90 degree bend to join the tail of the drain basket BEFORE the trap. This picture shows the overall layout, it does not show the correct fittings to use:

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Same design, presented on the original photo.

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  1. The laundry should not be joined with electrical tape. Usually appliance hoses are connected to such fittings with hose clamps. If that grey pipe is rubber, that is what you should do.

The above isn't a good solution but it's a lot better than what you have. The main sink may not drain well. The laundry may wash up into the main sink.

Or

There may not be enough vertical space to configure this. I can't tell from the photo. If not, you'll need a pump. Move the trap as described above but join the main sink to it via a Utility Sink Pump that would sit in the cabinet. You'll need electricity there. The cost of doing this may be similar to fixing drain connection properly.

Or

Get a shallower sink and eliminate the drain basket. Then you'll have a vanilla installation.

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